VHB, a Watertown, Mass., design firm, has elevated Michael J. Carragher to president, effective Jan. 1, and to CEO, effective Jan. 1, 2016, says the firm. In those roles, he will succeed Robert Brustlin, who becomes chairman. Carragher, a senior vice president, directs VHB's Southeast region. He is also the Florida region vice president of the Design-Build Institute of America. Brustlin, a co-founder of VHB, has been president and CEO for 15 years.

As it restructures and integrates global operations, Louis Berger has named Andrew V. Bailey II president of a newly expanded unit called Louis Berger Services. He was group vice president of global operations, which now is part of that unit. Bailey, who joined Berger in 2002, is based in Greenville, S.C.

Richard "Dick" Wells, transportation market manager and vice president of corporate development at Kleinfelder, was elected president of the American Council of Engineering Companies, which represents more than 5,000 firms. Based in Greensboro, N.C., he previously served as president and director of the state ACEC chapter.

Wendell A. Newton has joined Versar Inc., a Springfield, Va., consultant, as senior vice president of professional services. The role follows the firm's July 1 acquisition of J.M. Waller Associates Inc., a Fairfax, Va.-based environmental, logistics and facilities consulting firm, of which he was executive vice president. Waller has revenue of $30 million. Versar ranks at No. 119 on ENR's list of the Top 200 Environmental Firms.

Michael J. Petrisko has rejoined Hill International, again as senior vice president and chief information officer. He was vice president and CIO at STV Group. Prior to joining Hill in 2007, Petrisko was director of global IT operations at AECOM Technology Corp.

Parsons Corp., Pasadena, Calif., has rehired Dante V. Caravaggio, now as executive vice president and global business development director of its environment and infrastructure unit. Most recently, he was senior vice president of global heavy-process sales at Jacobs Engineering. Caravaggio's previous work for Parsons included upstream and downstream oil and gas project management in the U.S., Korea, Kuwait and Saudi Arabia, says the firm.